processing/src/test/java/org/apache/druid/query/timeseries/TimeseriesQueryTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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package org.apache.druid.query.timeseries;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.ImmutableSet;
import org.apache.druid.math.expr.ExprMacroTable;
import org.apache.druid.query.Druids;
import org.apache.druid.query.Query;
import org.apache.druid.query.QueryRunnerTestHelper;
import org.apache.druid.query.aggregation.LongSumAggregatorFactory;
import org.apache.druid.segment.TestHelper;
import org.apache.druid.segment.column.ValueType;
import org.apache.druid.segment.virtual.ExpressionVirtualColumn;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

import java.io.IOException;
import java.util.Arrays;

@RunWith(Parameterized.class)
public class TimeseriesQueryTest
{
  private static final ObjectMapper JSON_MAPPER = TestHelper.makeJsonMapper();

  @Parameterized.Parameters(name = "descending={0}")
  public static Iterable<Object[]> constructorFeeder()
  {
    return QueryRunnerTestHelper.cartesian(Arrays.asList(false, true));
  }

  private final boolean descending;

  public TimeseriesQueryTest(boolean descending)
  {
    this.descending = descending;
  }

  @Test
  public void testQuerySerialization() throws IOException
  {
    Query query = Druids.newTimeseriesQueryBuilder()
                        .dataSource(QueryRunnerTestHelper.DATA_SOURCE)
                        .granularity(QueryRunnerTestHelper.DAY_GRAN)
                        .intervals(QueryRunnerTestHelper.FULL_ON_INTERVAL_SPEC)
                        .aggregators(QueryRunnerTestHelper.ROWS_COUNT, QueryRunnerTestHelper.INDEX_DOUBLE_SUM)
                        .postAggregators(QueryRunnerTestHelper.ADD_ROWS_INDEX_CONSTANT)
                        .descending(descending)
                        .build();

    String json = JSON_MAPPER.writeValueAsString(query);
    Query serdeQuery = JSON_MAPPER.readValue(json, Query.class);

    Assert.assertEquals(query, serdeQuery);
  }

  @Test
  public void testGetRequiredColumns()
  {
    final TimeseriesQuery query =
        Druids.newTimeseriesQueryBuilder()
              .dataSource(QueryRunnerTestHelper.DATA_SOURCE)
              .granularity(QueryRunnerTestHelper.DAY_GRAN)
              .virtualColumns(
                  new ExpressionVirtualColumn(
                      "index",
                      "\"fieldFromVirtualColumn\"",
                      ValueType.LONG,
                      ExprMacroTable.nil()
                  )
              )
              .intervals(QueryRunnerTestHelper.FULL_ON_INTERVAL_SPEC)
              .aggregators(
                  QueryRunnerTestHelper.ROWS_COUNT,
                  QueryRunnerTestHelper.INDEX_DOUBLE_SUM,
                  QueryRunnerTestHelper.INDEX_LONG_MAX,
                  new LongSumAggregatorFactory("beep", "aField")
              )
              .postAggregators(QueryRunnerTestHelper.ADD_ROWS_INDEX_CONSTANT)
              .descending(descending)
              .build();

    Assert.assertEquals(ImmutableSet.of("__time", "fieldFromVirtualColumn", "aField"), query.getRequiredColumns());
  }
}